Updating codesandbox link

docs/unit-3/firebase-firestore.mdx

@@ -32,7 +32,7 @@ In this section, we'll add integration with Firestore as our database. In order
 
 I've put an example repo on CodeSandbox - similar to Codepen.io but meant for NextJS (and other similar) projects.
 
-[CodeSandbox Link](https://codesandbox.io/p/devbox/cs5356-firestore-demo-2wfw92?layout=%257B%2522sidebarPanel%2522%253A%2522EXPLORER%2522%252C%2522rootPanelGroup%2522%253A%257B%2522direction%2522%253A%2522horizontal%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522id%2522%253A%2522ROOT_LAYOUT%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522clv1cmdrw00073b6g9wmknf46%2522%252C%2522sizes%2522%253A%255B59.45362134688691%252C40.54637865311309%255D%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522EDITOR%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522id%2522%253A%2522clv1cmdrw00023b6geheeee0q%2522%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522SHELLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522id%2522%253A%2522clv1cmdrw00043b6gpkl0xmr1%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522DEVTOOLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522id%2522%253A%2522clv1cmdrw00063b6gkbcmoqvs%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%252C%2522sizes%2522%253A%255B50%252C50%255D%257D%252C%2522tabbedPanels%2522%253A%257B%2522clv1cmdrw00023b6geheeee0q%2522%253A%257B%2522tabs%2522%253A%255B%257B%2522id%2522%253A%2522clv1cmdrw00013b6gx46lp2od%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522FILE%2522%252C%2522filepath%2522%253A%2522%252FREADME.md%2522%252C%2522state%2522%253A%2522IDLE%2522%257D%255D%252C%2522id%2522%253A%2522clv1cmdrw00023b6geheeee0q%2522%252C%2522activeTabId%2522%253A%2522clv1cmdrw00013b6gx46lp2od%2522%257D%252C%2522clv1cmdrw00063b6gkbcmoqvs%2522%253A%257B%2522tabs%2522%253A%255B%257B%2522id%2522%253A%2522clv1cmdrw00053b6gp72dmlnw%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522TASK_PORT%2522%252C%2522taskId%2522%253A%2522dev%2522%252C%2522port%2522%253A3000%252C%2522path%2522%253A%2522%252F%2522%257D%255D%252C%2522id%2522%253A%2522clv1cmdrw00063b6gkbcmoqvs%2522%252C%2522activeTabId%2522%253A%2522clv1cmdrw00053b6gp72dmlnw%2522%257D%252C%2522clv1cmdrw00043b6gpkl0xmr1%2522%253A%257B%2522id%2522%253A%2522clv1cmdrw00043b6gpkl0xmr1%2522%252C%2522activeTabId%2522%253A%2522clv1cmdrw00033b6gyjuuf5jm%2522%252C%2522tabs%2522%253A%255B%257B%2522id%2522%253A%2522clv1cmdrw00033b6gyjuuf5jm%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522TASK_LOG%2522%252C%2522taskId%2522%253A%2522dev%2522%257D%252C%257B%2522id%2522%253A%2522clv1cswmf00h53b6gx75xm419%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522TERMINAL%2522%252C%2522shellId%2522%253A%2522clv1cswp8002tdjge962o2zlu%2522%257D%255D%257D%257D%252C%2522showDevtools%2522%253Atrue%252C%2522showShells%2522%253Atrue%252C%2522showSidebar%2522%253Atrue%252C%2522sidebarPanelSize%2522%253A15%257D)
+[CodeSandbox Link](https://codesandbox.io/p/devbox/cs5356-firestore-demo-2-2wfw92)
 
 Some important files:
 * `src/index.js` is a hello world NextJS project with the landing page content removed.